Daily Practice · GCSE Computer Science
November 1961 5-a-day
Every sheet in November 1961
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st November 1961Which CPU register holds the address of the next instruction to be fetched?
- 2nd November 1961Distinguish between the network security threats known as phishing and pharming.
- 3rd November 1961A 2D array grid is declared as grid[4][6]. State how many rows and columns it has and how many elements it holds in total.
- 4th November 1961A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
- 5th November 1961A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
- 6th November 1961A streaming company records which shows each user watches and uses this to recommend similar shows. Explain one ethical concern this could raise, even if the company only uses the data to improve recommendations.
- 7th November 1961State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
- 8th November 1961Write the pseudocode header and body for a function called isAdult that takes one integer parameter called age and returns True if age is 18 or over.
- 9th November 1961Give one example of an optical secondary storage device.
- 10th November 1961State the layer that IP operates in, and describe its job.
- 11th November 1961State the term used for realistic data that a program would be expected to handle during normal use.
- 12th November 1961State what a foreign key is used for.
- 13th November 1961State the difference between lossy and lossless compression.
- 14th November 1961State the condition that must be met before a binary search can be used on an array.
- 15th November 1961A logic circuit has inputs C and D. C feeds into a NOT gate; the output of the NOT gate and D feed into an OR gate, giving output Y. Write the Boolean expression for Y and state its value when C = 1 and D = 0.
- 16th November 1961A pseudocode algorithm is: count <- 0, x <- 10, WHILE x > 0, count <- count + 1, x <- x - 3, ENDWHILE, OUTPUT count. Complete a trace table for x and count, laid out as x | count, then state the value output.
- 17th November 1961Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
- 18th November 1961Describe what syntax highlighting is and how it helps a programmer.
- 19th November 1961Convert the denary number 45 to hexadecimal.
- 20th November 1961What does the acronym CPU stand for?
- 21st November 1961State what the term malware means.
- 22nd November 1961Trace this algorithm with data = [4, 9, 2, 9, 7] and state the final output. total = 0; count = 0; for i = 0 to 4: if data[i] > 5 then total = total + data[i] and count = count + 1; next i; print(total, count).
- 23rd November 1961An uncompressed file is 6000 KB. After lossless compression it is 1500 KB. Calculate the compression ratio in the form n:1 (original size : compressed size).
- 24th November 1961Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?
- 25th November 1961Which piece of UK legislation controls how organisations must store and use people's personal data?
- 26th November 1961Given x = 5 and y = 8, state whether x < y AND x > 0 evaluates to True or False.
- 27th November 1961State the value returned by LENGTH(word) if word stores the string 'Computer'.
- 28th November 1961Give one reason why RAM on its own is not enough, and a computer also needs secondary storage.
- 29th November 1961Explain the role of TCP when a large file is downloaded.
- 30th November 1961A password field requires between 6 and 12 characters. State two boundary data values that should be used to test this field.